Bold ideas, unjustified anticipations, and speculative thought, are our only means for interpreting nature: our only organon, our only instrument, fo… - Karl Popper

We see here that Plato recognizes only one ultimate standard, the interest of the state. Everything that furthers it is good and virtuous and just; everything that threatens it is bad and wicked and unjust. Actions that serve it are moral; actions that endanger it, immoral. In other words, Plato’s moral code is strictly utilitarian; it is a code of collectivist or political utilitarianism. The criterion of morality is the interest of the state. Morality is nothing but political hygiene.

This is the collectivist, the tribal, the totalitarian theory of morality: ‘Good is what is in the interest of my group; or my tribe; or my state.’ It is easy to see what this morality implied for international relations: that the state itself can never be wrong in any of its actions, as long as it is strong; that the state has the right, not only to do violence to its citizens, should that lead to an increase of strength, but also to attack other states, provided it does so without weakening itself. (This inference, the explicit recognition of the amorality of the state, and consequently the defence of moral nihilism in international relations, was drawn by Hegel.)

[A]rgument is a... form of the art of fighting—with words... inspired by... getting nearer to... truth...

Not only do I hate violence, but I firmly believe that the fight against it is not hopeless. I realize that the task is difficult. I realize that, only too often in the course of history, it has happened that what appeared at first to be a great success in the fight against violence was followed by a defeat. I do not overlook the fact that the new age of violence which was opened by the two World wars is by no means at an end. Nazism and Fascism are thoroughly beaten, but I must admit that their defeat does not mean that barbarism and brutality have been defeated. On the contrary, it is no use closing our eyes to the fact that these hateful ideas achieved something like a victory in defeat. I have to admit that Hitler succeeded in degrading the moral standards of our Western world, and that in the world of today there is more violence and brutal force than would have been tolerated even in the decade after the first World war. And we must face the possibility that our civilization may ultimately be destroyed by those new weapons which Hitlerism wished upon us, perhaps even within the first decade after the second World war; for no doubt the spirit of Hitlerism won its greatest victory over us when, after its defeat, we used the weapons which the threat of Nazism had induced us to develop.